Medium security facilities shall be designed only in conjunction with facilities which meet the requirements of Chapter 259, §§ 259.100-259.170 of this title (relating to Maximum Security Design) or Chapter 261, §§ 261.100-261.171 of this title (relating to Existing Maximum Security Design). Inmates housed in medium security facilities shall be assessed according to the provisions of Chapter 271 of this title (relating to Classification and Separation). Maximum security spaces incorporated into the medium security design shall meet the requirements of Chapter 259, §§ 259.100-259.170 of this title.
37 Tex. Admin. Code § 259.301